package com.voyage.third.controller;


import com.aliyun.oss.OSS;
import com.aliyun.oss.common.utils.BinaryUtil;
import com.aliyun.oss.model.MatchMode;
import com.aliyun.oss.model.PolicyConditions;
import com.voyage.common.constant.BaseController;
import com.voyage.common.constant.ResponseMO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedHashMap;

@RestController
@RequestMapping("/oss")
@Slf4j
@Api(tags = "OSS文件上传")
public class OssController extends BaseController {


    @Autowired
    private OSS ossClient;

    @Value("${alibaba.cloud.access-key}")
    private String accessId;
    @Value("${alibaba.cloud.oss.endpoint}")
    private String endpoint;
    @Value("${alibaba.cloud.oss.bucket}")
    private String bucket;


    @GetMapping("/policy")
    @ApiOperation(value = "获取签名")
    public ResponseMO<HashMap<String, String>> policy() {
//        String accessId = "<yourAccessKeyId>"; // 请填写您的AccessKeyId。
//        String accessKey = "<yourAccessKeySecret>"; // 请填写您的AccessKeySecret。
//        String endpoint = "oss-cn-hangzhou.aliyuncs.com"; // 请填写您的 endpoint。
//        String bucket = "bucket-name"; // 请填写您的 bucketname 。
        String host = "https://" + bucket + "." + endpoint; // host的格式为 bucketname.endpoint
        // callbackUrl为上传回调服务器的URL，请将下面的IP和Port配置为您自己的真实信息。
//        String callbackUrl = "http://88.88.88.88:8888";
        String format = new SimpleDateFormat("yyy-MM-dd").format(new Date());
        String dir = format + "/"; // 用户上传文件时指定的前缀。
        // 创建OSSClient实例。
//        OSS ossClient = new OSSClientBuilder().build(endpoint, accessId, accessKey);
        HashMap<String, String> respMap = new LinkedHashMap<String, String>();
        try {
            long expireTime = 30;
            long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
            Date expiration = new Date(expireEndTime);
            // PostObject请求最大可支持的文件大小为5 GB，即CONTENT_LENGTH_RANGE为5*1024*1024*1024。
            PolicyConditions policyConds = new PolicyConditions();
            policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 1048576000);
            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);

            String postPolicy = ossClient.generatePostPolicy(expiration, policyConds);
            byte[] binaryData = postPolicy.getBytes("utf-8");
            String encodedPolicy = BinaryUtil.toBase64String(binaryData);
            String postSignature = ossClient.calculatePostSignature(postPolicy);

            respMap.put("accessid", accessId);
            respMap.put("policy", encodedPolicy);
            respMap.put("signature", postSignature);
            respMap.put("dir", dir);
            respMap.put("host", host);
            respMap.put("expire", String.valueOf(expireEndTime / 1000));
        } catch (Exception e) {
            System.out.println(e.getMessage());
        } finally {
            ossClient.shutdown();
        }
        return success(respMap);
    }
}
